Solution-Processed Thin Film Semiconductors for Photovoltaic and Photoelectrochemical Applications

用于光伏和光电化学应用的溶液处理薄膜半导体

• 批准号: RGPIN-2019-05489
• 负责人: Uhl, Alexander
• 金额: $ 2.04万
• 依托单位: University of British Columbia
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=761780
• 关键词: Solution; Processed; Thin; Film; Semiconductors

The reduction of greenhouse gas emissions to mitigate climate change while meeting the growing global energy demand is one of the greatest challenges of our time. Renewable energy technologies, such as photovoltaics (PV), have been identified by the Intergovernmental Panel on Climate Change (IPCC) to play a leading role in the necessary transition away from fossil-combustion-based energy sources. However, hurdles for widespread implementation such as cost competitiveness and the inherent energy intermittency of solar energy must be overcome. Ink-based deposition techniques have the potential to bring down costs and allow sustainable growth of renewable technologies due to their low capital expenditure, high material utilization, and high throughput, if high device efficiencies and benign reaction mechanisms can be obtained at the same time. Thin film solar cells based on chalcogenide and perovskite absorbers are particularly promising as they have achieved power conversion efficiencies of over 22%, representing the highest value among thin film solar cells - exceeding the market-leading silicon technology - and can be fabricated by liquid deposition methods and on a choice of rigid or flexible substrates. Moreover, both technologies exhibit a wide range of bandgap tunability, which allows for their integration in solution-processed tandem solar cells that can further boost device efficiencies by over 40% and potentially reduce solar electricity prices to approach those of coal or gas. High voltages from tandem devices further allow their use in catalysis reactions for solar fuels. The photoelectrochemical (PEC) reduction of CO2 has received growing attention as a potential solution to the intermittency of solar PV while reducing the amount of excess CO2 in the atmosphere. Solar energy harvested by PV is thereby used to convert CO2 into value-added hydrocarbon chemicals for storable fuels that may be used within the existing transportation infrastructure. Similar to solar PV, low-cost deposition methods and materials for catalysts and PEC devices are needed to guarantee the growth of the technology as well as cost-competitive solar fuels. The proposed research program to design, fabricate, and characterize solution-processed semiconductor layers and devices for PV and PEC applications is a highly interdisciplinary field that is expected to generate comprehensive qualifications for HQP in the area of semiconductor engineering, which is highly desired by both academia and industry. Further, this research has the potential to trigger a paradigm shift in semiconductor manufacturing and energy generation, challenging traditional conceptions of inferior material quality for solution-processed films and leverage Canada to gain IP and jobs in the ever-more-important renewable energy sector.

减少温室气体排放以缓解气候变化，同时满足不断增长的全球能源需求，是我们这个时代最大的挑战之一。政府间气候变化专门委员会 (IPCC) 已确定光伏 (PV) 等可再生能源技术在摆脱化石燃烧能源的必要转型中发挥主导作用。然而，必须克服广泛实施的障碍，例如成本竞争力和太阳能固有的能源间歇性。 如果能够同时获得高设备效率和良性反应机制，基于墨水的沉积技术由于其资本支出低、材料利用率高和吞吐量高，有可能降低成本并允许可再生技术的可持续发展。基于硫族化物和钙钛矿吸收剂的薄膜太阳能电池特别有前途，因为它们的能量转换效率超过22%，代表了薄膜太阳能电池中的最高价值——超过了市场领先的硅技术——并且可以通过液相沉积制造方法以及刚性或柔性基材的选择。此外，这两种技术都表现出广泛的带隙可调性，这使得它们可以集成到溶液处理的串联太阳能电池中，从而可以进一步将设备效率提高40%以上，并有可能降低太阳能电价，使其接近煤炭或天然气的价格。串联装置的高电压进一步使其可用于太阳能燃料的催化反应。光电化学 (PEC) 还原二氧化碳作为解决太阳能光伏间歇性问题的潜在解决方案，同时减少大气中过量的二氧化碳量，受到越来越多的关注。通过光伏收集的太阳能可用于将二氧化碳转化为增值碳氢化合物，作为可储存燃料，供现有交通基础设施使用。与太阳能光伏类似，需要低成本的沉积方法以及用于催化剂和PEC装置的材料来保证技术的发展以及具有成本竞争力的太阳能燃料。 拟议的研究计划旨在设计、制造和表征用于光伏和 PEC 应用的溶液处理半导体层和器件，这是一个高度跨学科的领域，预计将为半导体工程领域的 HQP 提供全面的资格认证，这是双方都非常期望的学术界和工业界。此外，这项研究有可能引发半导体制造和能源生产的范式转变，挑战溶液加工薄膜材料质量较差的传统观念，并利用加拿大在日益重要的可再生能源领域获得知识产权和就业机会。